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<?php

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namespace passster;

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use Exception ;

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class PS_Conditional

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{

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/**

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* Check if valid authentication exists.

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* @param array $atts array of attributes.

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* @return boolean

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* @throws Exception

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public static function is_valid( array $atts ) : bool

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{

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$input = '';

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// is Cookie set?

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if ( !empty($_COOKIE['passster']) ) {

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$input = esc_html( $_COOKIE['passster'] );

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}

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// Valid password.

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if ( self::is_valid_password( $input, $atts ) ) {

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return true;

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}

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// captcha.

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if ( isset( $atts['captcha'] ) ) {

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if ( 'captcha' == $input ) {

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return true;

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}

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}

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// if nothing was correct.

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return false;

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}

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/**

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* Validate the password.

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* @param string $input given password to validate.

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* @param array $atts given arguments to check.

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* @return bool

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* @throws Exception

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public static function is_valid_password( string $input, array $atts ) : bool

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{

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// password.

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if ( !empty($atts['password']) ) {

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$hash = hash_hmac( 'sha256', esc_html( $atts['password'] ), get_option( 'passster_secure_key' ) );

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if ( hash_equals( $hash, $input ) ) {

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return true;

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}

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}

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return false;

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}

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}

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